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It is suggested that you always start with first code first. not knowing what code came first, and my experience with Dodge. i have found that them symptoms resemble a map,sensor/check vacuum hose and vacuum.

Were the plugs covered in oil? With the plugs that go through the valve cover you might need new seals. Did you replace the plug wires? You need to scan it for codes. It's most likely a missfire, but it could be a bad speed sensor (also called, VSS vehicle speed sensor, cam position sensor,or crank position sensor).